Easy Slow Cooker Ham

1 (6 pound) bone-in country
ham30 whole cloves3 cups apple cider, or as
needed1 cup brown sugar1 cup maple syrup2 tablespoons ground
cinnamon1 tablespoon ground nutmeg2 teaspoons ground ginger2 tablespoons ground cloves1 tablespoon vanilla
extract (optional)1 orange's peel

Press whole cloves into the ham so they are evenly
distributed. You may score the ham for easier insertion if you wish. Place the
ham in a slow cooker. Pour in apple cider until only about 2 inches of ham is
above the surface. Pack the brown sugar on top of the ham, pressing into the
cloves. This will get washed away in the next step but any that stays on is a
bonus. Pour the maple syrup over the ham. Season the apple cider with cinnamon,
nutmeg, ginger, ground cloves and vanilla. Add the orange peel to the pot. Fill
the slow cooker as full as you can with apple cider without going over the fill
line. Cover and set to Low. Cook for 8 to 10 hours.